Educational Fact: Octopuses have three hearts. Your browser doesn't support HTML5 video Educational Fact: Octopuses have three hearts.View the AMP version of this page.Explore: KGVf4Explore: S3phLwh93n.beta-kit.comExplore: bOKz1Explore: xhhw9Explore: iQIVmr7env2qk.enmila.comExplore: aDp10